Carpet-sweeper



J. H. GRAHAM.

CARPET SWEEPER.

APPLICATION FILED AUG- i6- 1917.

1119111111 July 19, 1921.

2 SHEETS-SHEET l.

I. H. GRAHAM.

CARPET SWEEPER.

APPLiCATlON FILED AUG-i6- 19l7.

' 138,999 Patented m 19, 1921.

2 SHEEI 8-SHEET 2.

attozucq 3 carpet sweepers.

all

UNITED STATES PATENT OFFICE.

JAMES H. exam, or monnximrou, oonnncricur; Assrnon, BY mism: ASSL-[GN- mmrrs, are, THE roanmc'ron comm, onronmneron, comwnc'ric ur, A. con- POEATION 0F CONNECTICUT.

' CARPET-SWEEPEE.

aeeaeee.

Specification of Letters 'Patent.

Patented July 19, 1921.

Application filed August 18, 1917. Serial No. 186,552. 4

To all whom it may concern:

Be it known that 1, JAMES H. GRAHAM, a citizen of the United States, residing at Torrington, in the county of Litchfield, State" of Connecticut, have invented certain new and useful Improvements in Carpet- Sweepers, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon. My invention relates to improvements in The object of the invention is to provide a carpet sweeper in which a rotary brush is used in conjunction with means for creating a suction and the brush so arranged in the vacuum nozzle that it can be readily adjusted vertically to vary the pressure ofthe brush on the surface being swept, the arrangement being such that the anti-friction wheels of the sweeper will at all times have an even pressure on the drive-rollers of the brush, regardless of its adjusted position.

Another object of the invention is to provide a swinging nozzle so arranged that it can be moved upwardly to permit access to the dust chamber and removal of the dust container, certain details of structure and operation being hereinafter more fully set forth.

In the accompanying drawings,-

Figure 1 is a side elevation of the sweeper showing the suction nozzle thrown upwardly in dotted lines;

Fig. 2 is a longitudinal vertical sectional view of Fig. 1; V

Fig. Sis an enlarged side elevation of the brush-adjusting means and means of pivotally mounting the vacuum nozzle;

ig. a is a plan view partly in section; Fig. 5 is an enlarged perspective view of the brush-adjusting means, showing the several parts in their disassembled relation.

Referring now to the drawings, 1 represents the housing which is made of the usual material and has the pivoted operating handie 2, which likewise is of the usual construction and material and needs no further description. Mounted'in the side walls 3 and 4 of the housing are bearings 5 and 6, in which is rotatably mounted the shaft 7, having rigidly fixed thereto the two rear supporting wheels 8 and 9 adjacent the side walls 3 and 4: ofthe housing. The shaft 7 intermediate the wheels 8 and 9 is provided with a series of cranks 10, wl1ich as shown are three in number, it being understood that the same could be varied without departing from the invention, the number of cranks being governed by the number of bellows in the housing, there being a crank for each bellows.

Arranged in the upper'part of the housing in front of the shaft 7 are the bellows 11,

communicating with the dust-receptacle 12 till through the openings 13 controlled by the flap valves, all of which is understood. Arranged in the receptacle is the dust bag 1% held -in extended position by means of the opposite ends connected to the cranks, by

means of which the bellows are operated by the forward or rearward movement of'the housing, all of which is readily understood. The outer end of the housing 1 has an extension 18 at its upper end below which is arranged the horizontal opening communieating with the dust chamber or receptacle 12. The said extension has secured to its outer end, plates 19, which have lateral extensions or pins 20 beyond the sides of the housing, which form hangers or hinges upon which the vacuum nozzle 21 is supported, as will now be described. This vacuum nozzle extends all the way across the end of the housing and is provided with an elongated opening 22, in its rear face which communicates with the open front end of the 'dust chamber or receptacle and fits tightly against the vertical wall 23 of the portion of the housing below the extension. lhe bottom of the nozzle is provided with an elongated opening 24, extending entirely across the same and is surrounded by a rubber or other elastic material, so that the nozzle will tightly engage the surface to be swept and cause a greater suction at a point directly below the opening 24:.

Theends of the nozzle 21 are provided through 1 .otlbdbtoithe: end:' walls:- chat-he IJIlOZZLGhfih30 -,;:-.:are-;hou"sings 31,; which have openings 11:32 1., through T which the :a-trunnionsii 28 pass, and Y said- .rplates 01111: Ibearings for-a the brush,

whereby it may be supported for rotation. :1;

The end provided with vertical accurate slotsm2...

tends entirely across the nozzle and directly yglf th e openi ngifliandri's adapteditogextend h'rou'gh; ithe fisame for. sweepingsor B'StIIIJIIgY-" {the dust directly below 1 thesnozzle..- v Piv- ,QThe plates 3'hhave secured to; the ,ends op-,

,posite the; pivots the ,links 33;;pivotedat 34, extending upwardlyvand having 5 pivotally: r -corinected thereto, onere'nd; of the intermediate y. 'piv ted le e .5-. The outer free w-ends th l vers arei p ovi ed with lateral;-

turned portions". 36 forming ;fingerhlds',; whereby each: leverflis grasped for operating The saidleversontheiinsideof the late erally turned portions 36, are provided with stru k 1 b.por ons fi-r which extend iniw rd y' and e gag t e o che 3 arr nge i v t e Pla e 2. :W yithe. lev s ar h d if or lockedin these;adjustedgpositions {or holding thebrushin-its adjusted position.

= 11. 7 6 h u g 3 hev rra ge ther he ietio o e s- 8.;r gid yv c r ie by t e. trunnions. .28 of the ,b1ush j and adapted-- to",

, engage the forward wheelsy39rarranged on ithe outsideof t e mainlhousing. ,qrThe hous- ,ings 31; have. theirrear ends open .to allow @these wheels 39 to jenter the same andengage the, friction rollers; 38. The forwardgwheels 9.;ar moun ledxon hele allyturned en s.

l j 40,.of the yokeetl, which is preferably made ofespring metalywhereby-ithe wheelshave a @limited spring-action; The yoke tl" at the;

center is provided with a U. shaped bent t portion extending through clips 42-carried by;the bottom:..0f the main housing 1,..as'

' shown in dotted lines in Fig.4;-of-the-drawings, for; securing the same to1'the .housing.,.,

;* The nozzle 21 is held tightlyin position.

* i by means of the-rods 43 pivotedtothestraps H 44yc'arried by thee-sides of; the housing, ex-;- tendingi forwardly and ventering the bifura j cated ends of the plates45 carried .by the BHdSOfwthGIlQZZlG 21. The ends of-the rods are screwthreaded and have thumb nuts l6 screwed thereon, adaptedto engage the outer faceof the plates-and draw, the nozzle tightly against the endsof thehousing opposite the dust. receptacle.

In "operation, the forwardpush fthe I erating handle moves thehousing forward; theywheels 39 engage the rollers 38-carried by the brush and rotate the same; and the brush extending through the opening in the walls of the nozzle below thej platesfla;are;

7 high extendi runnion 28,sar;..

is free to be swungoutwardly, as; shown in at theend of-the housing and in communicaa-the housing for Trotating the ,bfush within 'fg 'ge the 'snrface tin W 1s operates gthebellows through the cranks 10 and causes a suction in the nozzle through the dust The suction thus draws all of the dust fron'fthesuiface exgposiedaatoythe,slot in the nozzle. When it is desired to cause a greater orless pressure of the; brush on athexsur-fac being swept, the levers 35?:arermovedl up oradownnndathrough thee linki fconnections the housings? 31 are raised and flowered-:- and :the brush 'trunnions beingiimountedt infsaidhousing the :.brush is raised and l'owered; When it is desiredto re- :move :therdir't or dust fromthedsweep'er, the

nuts 46 on therods 43' areiunscrewed and the rods swung outwardly from ;.between the forkedends of therplates-z45 and-the'hnozzle dotted lines in Fig. 1,.':and.leaves-the dust gchamber openyso thatrthe-ha'g may be re- ;moved for-cleaningp" i i o The front 2 wheels",

39 which i aria :the

brush: are? in effect anti-friction frollers enfablin'gthe cleanerntog move; more readily over the carpet than would bethe caseif the Having thus described my invention, what I claim as new and desireg tog'seeure by Let- 1. A carpet sweeper. colnprisingia"housing,-. suction means in the housing-fa nozzle tioniwiththe suction means, a rotary adjustiable brush: in" theflinoz'zle, plates r secured to the ends of the. nozzle andihaving slots therein, pins carried by the housing and. assing through, the slots in the plates for pivotally supporting the samev on the housing, means for tightly holdingljthe nozzle against the end of the housing, anda meanscarried by the nozzle. z

2.; A. carpet sweeper comprising. a housing, suction 3 means in thekhou'sing, a nozzle at the endofthehousingand communication with the suction, means, a} rotary brush ;vertical-ly"; movabl e infthe nozz1e',,fpiv0ted housings carried by the; ends of -the-rn'ozzles,

qtrunnions carried by: the brush; and. extending into said housings, friction rollers carried by (the trunnions 'wlthin the housings,

intermediately, -pivoted levers,',and spring supported wheels carried by the main housing and engaging the rollers within the housing for rotating the brush.

3. A carpet sweeper comprising a housing, suction means in the housing, a nozzle m ee e at the end of the housing end in communiried by the main housing and engaging the cation with the suction means, a rotary brush rollers within the housing for rotating the vertically movable in the nozzle, pivoted brush.

- housing carried by the ends. of the nozzle, In testirnony whereof I afix' my signature I 5 trunnions carried by the brush and extendin the presence of two witnesses.

ing into said housing, friction rollers car- 1 JAMES H GRAHAM ried by the trunnions within the housings,

means for rocking said housing on their Witnesses:

pivots and holding them in their adjusted Lns'rnn J. Ross, 10 position, and spring supported wheels cer-' E. D.,- COPELAND. 

